/* 清除边距 */
* {
    margin: 0px;
    padding: 0px;
}

/* 清除浮动影响 */
.clearfix::after {
    content: "";
    display: block;
    clear: both;
}

/* logo样式 */
.logo {
    width: 105px;
    height: 30px;
    background-color: red;
    line-height: 30px;
    text-align: center;
    color: white;
}

/* 左浮动 */
.left-float {
    float: left;
    margin-left: 150px;
}

/* 右浮动 */
.right-float {
    float: right;
    margin-right: 150px;
}
